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US 12,622,167 B2Granted
Organic electroluminescent device
AssigneeDuPont Specialty Materials Korea Ltd.
InventorsYoo-Jin Doh, Soo-Yong Lee, Chi-Sik Kim, Seung-Hoon Yoo, Dong-Hyung Lee, Doo-Hyeon Moon, Soo-Jin Hwang
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Abstract
The present disclosure relates to an organic electroluminescent device. The organic electroluminescent device according to the present disclosure may exhibit low voltage, high efficiency, and/or long lifespan by including a light-emitting layer and an electron buffer layer comprising a specific organic electroluminescent material.
Claims9
An organic electroluminescent device comprising a first electrode;
- a second electrode facing the first electrode;
- a light-emitting layer between the first electrode and the second electrode;
- and an electron buffer layer and an electron transport zone between the light-emitting layer and the second electrode, wherein the electron buffer layer comprises a compound represented by the following formula 1-3:
- Wherein
- R1 to R6 each independently represent hydrogen or deuterium;
- L1 represents a single bond, or a substituted or unsubstituted (C6-C30)arylene,
- L2 represents a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (3- to 30-membered)heteroarylene;
- Ar1 represents a substituted or unsubstituted (C6-C30)aryl;
- Y represents O or S;
- Ring C represents a substituted or unsubstituted benzene ring, a substituted or unsubstituted naphthalene ring, or a substituted or unsubstituted phenanthrene ring;
- L9 represents a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (3- to 30-membered)heteroarylene;
- and
- R9 represents a substituted or unsubstituted (C6-C30)aryl or a substituted or unsubstituted (3- to 30-membered)heteroaryl.
10 more elements
An organic electroluminescent device comprising a first electrode;
- a second electrode facing the first electrode;
- a light-emitting layer between the first electrode and the second electrode;
- and an electron buffer layer and an electron transport zone between the light-emitting layer and the second electrode, wherein the electron buffer layer comprises a compound selected from the following compounds:
- wherein
- Dn means that n number of hydrogens is replaced with deuterium, wherein n represents an integer of 1 or more.
2 more elements
An organic electroluminescent device comprising a first electrode;
- a second electrode facing the first electrode;
- a light-emitting layer between the first electrode and the second electrode;
- and an electron buffer layer and an electron transport zone between the light-emitting layer and the second electrode, wherein the electron buffer layer comprises a compound represented by the following formula 1-1:
- wherein
- L1 represents a single bond;
- L2 represents a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (3- to 30-membered)heteroarylene;
- Ar1 represents a substituted or unsubstituted (3- to 30-membered)heteroaryl;
- and
- R1 to R8 each independently represent hydrogen or deuterium;
- Ring A and Ring B each independently represent a substituted or unsubstituted benzene ring or a substituted or unsubstituted naphthalene ring;
- and
- R21 and R22 each independently represent hydrogen, deuterium, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, or a substituted or unsubstituted (C3-C30)cycloalkyl;
- or may be linked to the adjacent substituent to form a ring(s);
- is selected from the following Group 1:
- [Group 1]
- wherein
- R23 to R26 each independently represent hydrogen, deuterium, halogen, cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C50)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, or a substituted or unsubstituted (C3-C30)cycloalkyl;
- or may be linked to the adjacent substituent to form a ring(s);
- a represents an integer of 1 to 3, b represents an integer of 1 to 4, c represents an integer of 1 to 5, and d represents an integer of 1 to 6;
- and
- when a to d are an integer of 2 or more, each of R23 to R26 may be the same or different;
- wherein the light-emitting layer comprises a compound selected from the following compounds:
- wherein
- Dn means that n number of hydrogens is replaced with deuterium, wherein n represents an integer of 1 or more.
21 more elements
Dependencies are inferred from the claim text.